Black smoke coming from your Mercury Grand Marquis’s exhaust is definitely a concerning problem. Different colored exhaust can mean different things. Black smoke is typically of greater concern than white smoke. Dark black smoke coming from the exhaust of your Grand Marquis indicates that there could be a serious engine problem, and indicates that the … Read more
One of the most alarming sounds you can hear from your Mercury Grand Marquis is the engine knocking. Unfortunately, an engine knock can be a sign of significant engine problems. The first thing you should do is check your Grand Marquis’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant … Read more
The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Mercury Grand Marquis’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your Grand … Read more
One of the most inconvenient things that can happen to your Mercury Grand Marquis is when the speedometer stops working. You don’t realize how much you look at the thing until it’s always sitting at 0 MPH while driving down the road. If your car’s speedometer is not working, it’s usually caused by an issue … Read more
One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Mercury Grand Marquis isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. It is entirely possible for your Grand Marquis’s heater to work just fine even when the air conditioner … Read more
Fuel injectors can go the life of a modern vehicle with little to no trouble at all. That being said, bad fuel injectors are one of the more common issues that happen to any vehicle (Mercury Grand Marquis included). There’s always more than one fuel injector, and even one going bad is enough to … Read more
One of the most common problems with the Mercury Grand Marquis (or any vehicle) is when the brakes are grinding. The number one cause of grinding brakes is going to be brake pads that have worn all of their friction material off. But, there are other causes as well. Your Mercury Grand Marquis is … Read more
If your Mercury Grand Marquis’s steering wheel is shaking, you should deal with it immediately. A shaking steering wheel in the Mercury Grand Marquis is caused by anything from the wheels and tires through the suspension (ball joints, tie rods, etc.) to the braking system. We’ll start with the easiest things to check and move … Read more
Bad Coil Packs are one of the more problematic ignition issues that can occur with the Mercury Grand Marquis. A bad oil pack can make your Grand Marquis almost un-drivable. Or it may have little effect at all on the engine’s ability to run. It’ll get worse as they lose their ability to fire the … Read more
If your Mercury Grand Marquis doesn’t start, you’ve found the right article. Many different issues can cause the problem. We cover all the likely ones in an order that makes sense when diagnosing the issue at home. This article is written with the assumption that you are looking for a way to get your Mercury … Read more